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• How To Convert Bit Rate (VBR) Of MP3 File Using PHP ?

  29 avril 2014, par Dave

  Using php, I am trying to convert and overwrite an mp3 file using the following command....doesn’t work.

  ffmpeg -i /Users/MacBookPro/Desktop/dragons.mp3 -ar 44100 -ab 128k -f mp3 /Users/MacBookPro/Desktop/dragons.mp3

  So even when I try the command from the terminal, the new mp3 file is only about 5 seconds (originally 3 minutes). What am I doing wrong & any ideas on how to get the command working ?

  Thanks in advance !

• How to run a ffmpeg command in python with file paths containing spaces ?

  21 juillet 2023, par tomatochan

  I'm developing a program in Python that requires the use of FFMPEG. In one step, I need to create a video from a text file containing the list of images (path and duration) that need to be assembled to make a video. To do this, I use the following code :

  


  cmd = [ffmpeg, "-y", "-f", "concat", "-safe", "0", "-i", tmp, "-c:v", "libx264", "-r", "25", "-pix_fmt", "yuv420p", out]
subprocess.run(cmd)
# os.system(" ".join(cmd)) # returns same error


  


  What returns the error : The syntax of the file, directory or volume name is incorrect.

  


  I know that paths can be problematic when they contain spaces, and as my username has one, I've taken care to quote the paths in such a way that :

  


  ffmpeg = "C:\Users\John Doe\Documents\ffmpeg\bin\ffmpeg.exe"
tmp = "C:\Users\John Doe\Desktop\path\to\file.txt"
out = "C:\Users\John Doe\Desktop\path\to\video.mp4"


  


  When I print(" ".join(cmd)), this is what I get in my terminal :

  


  "C:\Users\John Doe\Documentsffmpeg\binffmpeg.exe" -y -f concat -safe 0 -i "C:\Users\John Doe\Desktop\path\to\file.txt" -c:v libx264 -r 25 -pix_fmt yuv420p "C:\Users\John Doe\Desktop\path\to\video.mp4"


  


  However, the problem persists.
Has anyone ever had this problem and managed to solve it ?

  


  I've also tried the method where you have to escape the spaces (taking care to replace the \ with / and then the with \ ) but nothing works... The error persists.

  


  For your information, here are the contents of one of my .txt files

  


  file C:\Users\John Doe\Desktop\path\to\image_1.png
duration 0.04
file C:\Users\John Doe\Desktop\path\to\image_2.png
duration 0.04
file C:\Users\John Doe\Desktop\path\toimage_3.png
duration 0.04


  


  When I quote the paths in the .txt files

  


  

  • subprocess gives me the error :
PermissionError: [WinError 5] Access denied

  


  • os.system gives me the error :

  


  


  C:\Users\John' is not recognized as an internal or external command, an executable program or a command file.
The syntax of the file, directory or volume name is incorrect.


  


• Can't upload .mkv video file to camtasia 2018

  11 juin 2019, par FunTech StudentsVideos

  Can’t Import .mkv video file to camtasia 2018 :

  I have made an intro for my Youtube Channel on Penzoid and then uploaded it to my laptop in .mkv file format, now it can’t be import to camtasia 2018 for rendering with the recorded video in camtasia...

  I used cloudconvert to convert my intro to .mp4 format but it give me the following error :

  ERROR Could not find tag for codec vp8 in stream #0, codec not currently supported in container
  . Last message repeated 1 times
  Last message repeated 1 times

  I also used .bat file with the following code but it didn’t help me :

  @echo off
  
  if not exist "fixed" mkdir fixed
  
  for %%f in ("*.mp4") do "C:\Users\Nadeem Ullah\Downloads\Compressed\ffmpeg-win64-static\bin\ffmpeg.exe" -i "%%f" -c:a copy -c:v copy "fixed\%%~nf.mp4"